Display screen with a graphical user interface



The sole FIGURE is a front view of the display screen with a graphical user interface.

The outermost broken lines showing an electronic device depict the environment of the claimed design and form no part thereof. The remaining broken lines illustrate a display screen and portions of the graphical user interface that form no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 